.ag-theme-quartz, .ag-theme-quartz-dark {
    --ag-control-panel-background-color: #CC222244;
    --ag-side-button-selected-background-color: #CC222244;

    --ag-selected-tab-underline-color: deeppink;
    --ag-selected-tab-underline-width: 2px;
    --ag-selected-tab-underline-transition-speed: 0.5s;

    --ag-side-bar-panel-width: 300px;
}

.ag-theme-quartz .ag-filter-toolpanel-group-title-bar,
.ag-theme-quartz-dark .ag-filter-toolpanel-group-title-bar {
    /* use a semi-transparent background to show the background colour behind */
    background-color: rgb(255, 255, 255, 0.2);
}